package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.SetmealDTO;
import com.sky.dto.SetmealPageQueryDTO;
import com.sky.entity.Category;
import com.sky.entity.Dish;
import com.sky.entity.Setmeal;
import com.sky.entity.SetmealDish;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.SetmealEnableFailedException;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealDishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.SetmealService;
import com.sky.vo.DishItemVO;
import com.sky.vo.SetmealVO;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.server.MethodNotAllowedException;

import java.sql.Wrapper;
import java.util.ArrayList;
import java.util.List;

@Service
public class SetmealServiceImpl implements SetmealService {

    @Autowired
    SetmealMapper setmealMapper;

    @Autowired
    SetmealDishMapper setmealDishMapper;

    @Autowired
    DishMapper dishMapper;

    /**
     * 条件查询
     * @param setmeal
     * @return
     */
    public List<Setmeal> listSetmeal(Setmeal setmeal) {
        List<Setmeal> list = setmealMapper.listSetmeal(setmeal);
        return list;
    }

    /**
     * 根据id查询菜品选项
     * @param id
     * @return
     */
    public List<DishItemVO> getDishItemById(Long id) {
        return setmealMapper.getDishItemBySetmealId(id);
    }

    /**
     * 删除套餐
     *
     * @param ids
     */
    @Override
    @Transactional
    public void deleteSetmeal(List<Long> ids) {
        for (Long id : ids) {
            Setmeal setmeal = setmealMapper.list(id);
            if (setmeal.getStatus() == StatusConstant.ENABLE) {
                throw new DeletionNotAllowedException(MessageConstant.SETMEAL_ON_SALE);
            }
        }
        for (Long id : ids) {
            setmealMapper.deleteSetmeal(id);
            setmealDishMapper.delete(id);
        }
    }

    /**
     * 套餐起售停售
     *
     * @param status
     * @param id
     */
    @Override
    @Transactional
    public void updateStatus(Integer status, Long id) {
        Setmeal setmeal = Setmeal.builder().status(status).id(id).build();
        Long setmealId = setmeal.getId();
        List<Long> dishIds = setmealDishMapper.getBySetmealId(setmealId);
        if (status == StatusConstant.ENABLE) {
            for (Long dishId : dishIds) {
                Dish dish = dishMapper.getById(dishId);
                if (dish.getStatus() == StatusConstant.DISABLE) {
                    throw new SetmealEnableFailedException(MessageConstant.SETMEAL_ENABLE_FAILED);
                }
            }
        }
        setmealMapper.updateSetmeal(setmeal);
    }

    /**
     * 修改套餐
     *
     * @param setmealDTO
     */
    @Override
    @Transactional
    public void updateSetmeal(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);
        setmealMapper.updateSetmeal(setmeal);

        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes != null && setmealDishes.size() > 0) {
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmeal.getId());
            });
            setmealDishMapper.delete(setmeal.getId());
            setmealDishMapper.insertBatch(setmealDishes);
        }
    }

    /**
     * 根据id查询
     *
     * @param id
     * @return
     */
    @Override
    public SetmealDTO list(Long id) {
        Setmeal setmeal = setmealMapper.list(id);
        SetmealDTO setmealDTO = new SetmealDTO();
        BeanUtils.copyProperties(setmeal, setmealDTO);
        List<SetmealDish> setmealDishes = setmealDishMapper.getById(id);
        setmealDTO.setSetmealDishes(setmealDishes);

        return setmealDTO;
    }

    /**
     * 套餐分页查询
     *
     * @param setmealPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(SetmealPageQueryDTO setmealPageQueryDTO) {
        PageHelper.startPage(setmealPageQueryDTO.getPage(), setmealPageQueryDTO.getPageSize());
        Page<SetmealVO> page = setmealMapper.pageQuery(setmealPageQueryDTO);
        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 新增套餐
     *
     * @param setmealDTO
     */
    @Override
    @Transactional
    public void save(SetmealDTO setmealDTO) {
        Setmeal setmeal = new Setmeal();
        BeanUtils.copyProperties(setmealDTO, setmeal);

        setmealMapper.insert(setmeal);

        Long setmealId = setmeal.getId();
        List<SetmealDish> setmealDishes = setmealDTO.getSetmealDishes();
        if (setmealDishes != null && setmealDishes.size() > 0) {
            setmealDishes.forEach(setmealDish -> {
                setmealDish.setSetmealId(setmealId);
            });
            setmealDishMapper.insertBatch(setmealDishes);
        }

    }
}
